Lubricating system



40 construction, economical Patented Mar.. 1a, leze.

`U N i T ERNEST w. Davis, or Oax Penn,

ILLINOIS, AssIGNon To ALEMITE MANUEACTURING CORPORATION, or CHICAGO, ILLINOIS, .a

CORPORATION F DELAWARE.

LUBRICATrNe SYSTEM.

Application filed February 21, 1924. Serial- No. 694,378.

' l My invention relates to improvements in ubricating systems, and is particularly concerii'ed with the provision of a novel lubricating system comprising a plurality of ittings 5 to be secured to the bearings to be lubricated, yand a compressor for successivelyisupplying lubricant under pressure' to these fittings. The objects of my presentinvention are, First, to provide a lubricating system such 1 0 as described, in which the fittings are provided with cam surfaces adapted to co-operate with elements of the compressor to place lubricant in the compressor under pressure when the compressor or .portion thereof is moved relatively to the fittings;

Second, to provide a construction such as described, in which the elements of the compressor and fitting are so arranged that when the compressor is rotated relatively tothe fittings, a charge of lubricant under pressure will be forced into the fittings;

Third, to provide a construction such asl described, in which the fitting is provided with one or more spiral cams, and the compressor is provided with a coupling member having surfaces for co-acting with the thread or threads on theiitting, so thatfas the corn-v pressoris rotated relatively to thefitting a plun er forminga part of the compressor will ie actuated.` to place the lubricant adjacent the plunger under pressure; Fourth, to provide a construction such as described, in which the plunger effects a seal betweenthe compressor and the fitting; Fifth, to provide novel means for insuring a tight joint Abetween the plunger and the sleeve or cylinder in which it operates ;v and Sixth, to vprovide a lubricating system of the character described, which is simple in to manufacture, and easy to operate.

Other objects of my invention will appear as this description progresses, reference be ing had tothe drawing which discloses a 45 central longitudinallsection of my improved compressor in position to co-aet with the fitting which forms 'a part of my invention and which is here shownin side elevation.

Referring to the drawing, my' 'improved compressor comprises a barrel 5 having a cap 6 detachably secured to One and thereof by means of a suitable screw thread connection 7. The other end of the barrel terminates in an externally threaded nipple 8 to .which is 55 secured one Aend of the coupling sleeve or 1.9 to act as a sto which engaes the piston cylinder 9. The outer end of the coupling s eeve 9 is provided with, internal threads 10 of comparatively steep pitch. In the form illustrated herein, two threads 10 are provided `for co-acting with the double thread or cam surface 11 with which the fitting 12 is provided. This fitting is providedl with the usual pipe thread 131:0 secure it to the bearing 14 which is to be lubricated, and its inner end is c lindrical in form and'of such diameter t iat it can readily pass through the threaded end of the sleeve 9.

A shoulder 15 is formed within the sleeve for the cup leather 16 which is provided wit the central aperture 17. A displacing element 18 has one end secured in the cup leather; 16, andthe other end acts as a centering device for the beveled spreader ring 19 and also for the outer end of the coinpressionspringn20, the .outer end of which abuts against the inner face of the spreader ring- 19, and the inner end of which abuts against the disc 21 which is clamped between a shoulder 22 on the sleeve 9 and the gasket 23,y this gasket being clamped against the disc 21 by the end of the nipple 8.

I provide a valve 24 for co-acting with the valve disc 21 to prevent return flow .of lubricant to the barrel 5 through the port 25 into the cylinder. The valve 24 has a valve stem 26 which terminates in a head 27 that acts as an abutment for one end of the spiral spring 28. The other end of this spring rests Aagainst or upon the disc 21. The head 27 is just small enough to pass 'through the port 25.

A rod 29 is secured to the cap 6 and projects inwardly into the barrel 5. piston comprising the face plate 30, the felt disc 31, and the follower plate 32, is slidably mounted in f the barrel 5. The face plate 30 has tongues 33 struck therefrom which extend through the felt disc 31 and the follower late 32, and are riveted over at their outer en s as shown at 34 to hold the piston in assembled relation. The three elements forming the piston are provided withaligned openings for receiving the rod 29 so that thepiston is ree to tloat in the cylinder 5. Preerably,-the inner end of the rod 29 is provided with an, enlargement 35 when the cap. is unscrewed an the rod 29 is pulled out of the barrel 6. In this manner the piston is Vcarried along with the cap 6 and rod '29 so that the barrel can be filled withlubr'icant.

after it has once passed opposite and is so positioned that finder 9, resulting K When the barrel has beenl filled with lubricant and the cap' 6 re laced, the operator positions the open `en d o -the coupling sleeve 9 u on the end of the fitting 12 in the manner indlcated in the drawin and then rotates the barrel 5 in the proper irection to cause the threads 10 to engage the threads 11 andmove the coupling sleeve or cylinder 9 downwardly over the fitting. The end. of the fittin en'- gages with the cup leather 16, and as the s eeve 9 moves over the fitting the cup leather is pushed'inwardly -into the sleeve and ldisplaces the contents of the sleeve 9 which are held between the cup leather .and the valve 24. When the inward movement ofthe fitting 12 relatively to the sleeve 9 is completed, the o erator turns the barrel 5 in the opposite direction and the spring 2O forces the cup leather to its outermost position. In doing this a vacuum is created in the cylinder which opens the valve 24 and sucks the lubricant froml the barrel 5 into the cylinder. The operator thereu on turns the barrel 5 in the directlon and again displaces the contents of the cylinder9. By repeating this operation, the operator can force into the fitting 12 as much lubricant as may be desired. It will, of course, be understood that the valve of the fitting 12 assists in developing the vacuum inthe ycylinder 9, but ordinarily this valve can be dispensed with because the resistance to the movement of lubricant in the bearing itself will be suflicient to prevent the return ow of lubricant to the cylinder 9 from the fitting 12 when the c up leather 16 and displacer 18 move outwardly.

It will be noticedthat the spring 20 pushes against the inner face of the spreader ring 19 it tends to force the edge of the flange of the cup leather 16- outwardly against the walls of the cylinder l9 and thus prevents the access of air to the cylfrom leakage between the cup leather and the cylinder.

bricants of either the liquid or plastic varlety can be readily forced into a bearing evenl when the barrel of the piston is below the level of the bearing.

While I have described the details` of construction of the preferred embodiment of my invention, it is to be clearly understoodthat my invention is not limited to these details tation' andmodifications within the scope o leather slidable in said cylinder,

of construction, but-is'capable of other. adapf i the appended claims f y Having thus described my invention, what I claim is a' 1. The combination with a fitting having external spiral cam surfaces, of a compressor comprising a barrel, a cylinder secured to said barrel and comunicatin therewith, the outer end of said. cylinder gbeing provided with internal inclined cam surfaces for coacting with the cam surfaces on said fitting, a cup leather slidable in said c `lindxer, a displacer havino one end exten ing into said cup' leather, a eveled spreader ring snrrounding said displacer and bearing 'against said cup leather, a spring having one end bearing against said spreader ring, and an outwardly opening valve between said barrel and said cylinder.

2. A lubricant compressorI comprising a cylinder, a shoulder therein, an apertured cup means for maintaining the bottom of said cup leather in a substantially flat position against said shoulder, and further means zo-operative` with said iirst'mentioned means to expand `the wall of the cylinder.

3. A lubricant com ressor comprising a cylinder, la shoulder t erein, a cup leather slidable .in said cylinder, a central aperture therein, a cylindrical die member formed into ay flat disc at one` end to retain the position and form of said aperture, a spreader ring sliding upon the cylindrical die member and beveled to expand the upturned flange of the cup leather, and a sprlng for holding' said spreader ring in contact with said cup leather.

4. A lubricant compressor comprising a cylinder, a shoulder in one end thereof, a cup leather adapted to reciprocate in the cylinder and seat on said shoulder, a complementary Y fitting part adapted to enter the cylinder W ith the compressor described ab0ve,.lu

ERNEST W. DAVIS. 

